Larian Studios Forums Dragon Commander Dragon Commander - Beta The giant blob of death

So I've been playing around with the Beta almost since it went open (beta).
After some time of getting used to it and a few patches I managed to do well enough in the game.

There's some thing I noticed since around patch 1.0.124 or so, though:
In an evenly matched game, it often happens that I hold some chokepoint, usually without much effort.
Since I'm not strong enough for a direct attack yet, I build up my army, defending against more or less constant but weak attacks from the enemy AI.
Then suddenly, the enemy attacks with a huge (really huge) blob of units (mostly light infantry).
The thing is, there doesn't seem to be anything I can do at that point.
AI produces faster, kills my troops faster and, most importantly, manages to keep a constant stream of units up - the map just shows a steady colored line from the AI base to the frontline. I might be able to defend for a while, as the enemy units are rather weak, but there is strength in numbers after all...

What I don't understand is how this can happen so suddenly and how the AI manages to sustain it. The AI has roughly the same amount of resources like I do.
It's as if a chaotic or meta-stable system suddenly tips over, i.e. all seems fine, then suddenly all hell breaks loose.

Any ideas?